Published in
American Astronomical Society, Astrophysical Journal, 1(805), p. 9, 2015
DOI: 10.1088/0004-637x/805/1/9
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The Gould's Belt Very Large Array Survey II: The Serpens region
,
Amy J. Mioduszewski,
Sergio A. Dzib,
Luis F. Rodríguez,
Gerardo Pech,
Juana L. Rivera,
Rosa M. Torres,
Andrew F. Boden,
Lee W. Hartmann,
Neal J. Evans,
Neal J. Evans Ii,
Cesar Briceño ,
Cesar Briceño Ii,
John J. Tobin
and other authors.
Full text: Download
Abstract
We present deep ($∼ 17~μ$Jy) radio continuum observations of the Serpens molecular cloud, the Serpens south cluster, and the W40 region obtained using the Very Large Array in its A configuration. We detect a total of 146 sources, 29 of which are young stellar objects (YSOs), 2 are BV stars and 5 more are associated with phenomena related to YSOs. Based on their radio variability and spectral index, we propose that about 16 of the remaining 110 unclassified sources are also YSOs. For approximately 65% of the known YSOs detected here as radio sources, the emission is most likely non-thermal, and related to stellar coronal activity. As also recently observed in Ophiuchus, our sample of YSOs with X-ray counterparts lies below the fiducial G̈udel & Benz relation. Finally, we analyze the proper motions of 9 sources in the W40 region. This allows us to better constrain the membership of the radio sources in the region. ; Comment: Accepted in The Astrophysical Journal